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How to Use the Free WHOIS Lookup Tool

A complete guide to the WhoisExtractor WHOIS Lookup Tool - what information it returns, how to read the results, and when to use it versus the database products.

Tools & Usage

Automating Daily Data Delivery With the API

How to set up a fully automated pipeline that downloads your WhoisExtractor database files every morning without any manual steps - using cron, Windows Task Scheduler, or a CI job.

API & Integrations

Website Database CSV Format Reference

A complete column-by-column reference for the Website Database CSV file - what each field contains, how contact data is extracted from live websites, and how to use the data for B2B outreach.

Data & Formats

Domains Database CSV Format Reference

A complete column-by-column reference for the Domains Database CSV file - what each field contains, data types, and how to use them for filtering and segmentation.

Data & Formats

How to Download Your Database Files

Step-by-step instructions for downloading your purchased database files from the dashboard or via the API, including file format details and how to open the ZIP archives.

Data & Formats

Understanding WHOIS Data Fields

A complete reference for every field returned by the WhoisExtractor API - what each field means, where the data comes from, and when to expect null values.

API & Integrations

Getting Started with the WhoisExtractor API

Everything you need to make your first API call - authentication, product IDs, how the file download works, and common troubleshooting tips.

API & Integrations